NOTE: ALL EXHAUST SALES ARE FINAL AND HAVE A 12 WEEK MINIMUM LEAD TIME. NO CANCELLATIONS, REFUNDS, OR RETURNS. Ramjet's has been selling Thunderheaders for nearly 30 years! Shortly after being introduced to the market in the late '80s, Thunderheader 2:1 exhaust systems became THE performance exhaust system for your Harley-Davidson. Between the unmistakable Thunderheader sound to its seat of the pants, dyno-proven performance gains, and its iconic look, a Thunderheader is always an excellent choice! Thunderheader head pipes are tuned to the proper length and diameter to produce maximum horsepower and an excellent torque curve. With a patented collector design, only Thunderheader systems can produce their power, torque, and sound. The collector directs spent gases through acoustical dampening chambers, which creates a spiral motion upon exiting the pipes. This also creates an anti-reversion trap to minimize the amount of air rushing back in.PLEASE READ NOTES BELOW CONCERNING AVAILABILITY AND LEAD TIMES. Commonly Recognized As The BEST Sounding Exhaust For Harley-Davidson Proven & Noticeable Performance Gains Available In Black or Chrome Heat Shields Available Separately Classic / Performance Look 100% MADE IN THE USA FITS: 91' - 98' Dyna (With Mids & Forwards) 99' - 05' Dyna (With Mids & Forwards) 06' - 17' Dyna (With Mids & Forwards) ***Ramjet Thunderheader Brackets are highly recommended over the stock bracket available HERE ***Heat shields are available for purchase HERE NOTE: These exhausts are a regular stocking item BUT they sell out nearly AS SOON AS THEY ARRIVE. We order a batch of systems every week, so by placing an order you will almost certainly get a pipe significantly faster than ordering elsewhere. However, if your exhaust is out of stock, please allow a minimum of 12 weeks for delivery due to customer demand, manufacturer fulfilment rate and the current shipping environment. Orders may be placed on here in full or you can call the shop (602-788-0364) to place an order with a 50% deposit to get you on the schedule, and the remaining balance is due the day it ships. International customers can email with part number desired, and EXACT shipping address with phone number sent to [email protected] for a shipping Quote. We will place you on the back-order list at no cost per request but, you will only be guaranteed a system with a deposit. Back orders without a deposit will be filled in order received AFTER paid orders. To do so contact us at 602-788-0364 or [email protected] All sales on exhausts systems are final and cannot be returned or cancelled under any circumstances as they are all custom made to order. 12 week *minimum* lead time on exhausts not in stock, after 12 weeks orders are filled in the order received. DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION-CONTROLLED MOTOR VEHICLES. IF FOR RACE OR OFF-HIGHWAY USE OUR CA EXHAUST WAIVER WILL NEED TO BE SIGNED AND RETURNED PRIOR TO SHIPPING. CALIFORNIA CARB WAIVER AVAILABLE HERE THIS ITEM DOES REQUIRE A SHIPPING CHARGE. COSTS WILL BE CALCULATED IN CHECKOUT.
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